Refactor setup.py to use Path and read_text for file reading

[mahdirahimi1999]

Changes:

• Updated setup.py to use Path.read_text() instead of open() for reading files.
• Simplified version retrieval and long description loading using pathlib.Path.

Benefits:

• Cleaner and more efficient file handling.
• Improved readability and modern Python practices.

Files Modified:

• setup.py